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Instruction Sheet
for the PASCO
Model CI-6555

CHARGE SENSOR

012-06991A

5/99

$1.00

© 1999 PASCO scientific

Introduction

The CI-6555 Charge Sensor measures voltages

from sources where the total amount of available

charge is very small, for example, many

electrostatics experiments. It is essentially a voltage

amplifier with extremely high input resistance.

Whereas a typical digital multimeter has an input

resistance of 10 megaohms (10

7

 ohms), the Charge

Sensor has an input resistance of at least 10

12

ohms.

Coupled with a ScienceWorkshop

®

  Computer

Interface, the Charge Sensor can be used as an

electronic version of the familiar laboratory

electroscope. Unlike the traditional electroscope

however, the Charge Sensor can make quantitative

measurements as well as indicate charge polarity.

Equipment

INCLUDED

• Charge Sensor (CI-6555)

SUGGESTED ACCESSORIES:

• Faraday Ice Pail (ES-9042A)

• Charge Producers and Proof Plane (ES-9057A)

• Conductive Spheres (ES-9059B)

• Power Supply (ES-9077)

ADDITIONAL REQUIRED

PASCO 

ScienceWorkshop 

Computer Interface

(300, 500, 700, or 750)

gain switch

zero switch

BNC/alligator cable

8-pin DIN
connector

amplifier box

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